Loans Loans (Troubled Debt Restructurings Subsequent Default) (Details) - Payment Default [Member] $ in Thousands		3 Months Ended
		Mar. 31, 2016 USD ($) loan	Mar. 31, 2015 USD ($) loan
Financing Receivable, Modifications [Line Items]
Number of loans modified as a troubled debt restructuring | loan		6	4
Amount of loans modified as troubled debt restructuring with payment defaults | $	[1]	$ 809	$ 349
Commercial Mortgages [Member]
Financing Receivable, Modifications [Line Items]
Number of loans modified as a troubled debt restructuring | loan		0	0
Amount of loans modified as troubled debt restructuring with payment defaults | $	[1]	$ 0	$ 0
Commercial Construction & Development [Member]
Financing Receivable, Modifications [Line Items]
Number of loans modified as a troubled debt restructuring | loan		0	0
Amount of loans modified as troubled debt restructuring with payment defaults | $	[1]	$ 0	$ 0
Commercial & Industrial [Member]
Financing Receivable, Modifications [Line Items]
Number of loans modified as a troubled debt restructuring | loan		5	2
Amount of loans modified as troubled debt restructuring with payment defaults | $	[1]	$ 743	$ 11
Residential Mortgage [Member]
Financing Receivable, Modifications [Line Items]
Number of loans modified as a troubled debt restructuring | loan		0	2
Amount of loans modified as troubled debt restructuring with payment defaults | $	[1]	$ 0	$ 338
Homeowner Construction [Member]
Financing Receivable, Modifications [Line Items]
Number of loans modified as a troubled debt restructuring | loan		0	0
Amount of loans modified as troubled debt restructuring with payment defaults | $	[1]	$ 0	$ 0
Home Equity Lines [Member]
Financing Receivable, Modifications [Line Items]
Number of loans modified as a troubled debt restructuring | loan		0	0
Amount of loans modified as troubled debt restructuring with payment defaults | $	[1]	$ 0	$ 0
Home Equity Loans [Member]
Financing Receivable, Modifications [Line Items]
Number of loans modified as a troubled debt restructuring | loan		1	0
Amount of loans modified as troubled debt restructuring with payment defaults | $	[1]	$ 66	$ 0
Other Consumer [Member]
Financing Receivable, Modifications [Line Items]
Number of loans modified as a troubled debt restructuring | loan		0	0
Amount of loans modified as troubled debt restructuring with payment defaults | $	[1]	$ 0	$ 0

[1] The recorded investment in troubled debt restructurings consists of unpaid principal balance, net of charge-offs and unamortized deferred loan origination fees and costs. For accruing troubled debt restructured loans, the recorded investment also includes accrued interest.